schweiter



(No Model.) 3 sheets-sheet 1.

J. SCHWEITER.

. G'LOTHRUBBNG APPARATUS.

No. 545,252. Patented Aug. 27,1895.

[ft/zessen @www1 (No ModeL) 3 Sheets-Sheet; 2A

J, SCHWEITER,

CLOTH RUBBING APPARATUS.

Patented Aug (No Model.) 3 Sheets-Sheet. 3 J. SCHWEITBR- CLOTH RUBBING APPARATUS.

Patented Aug. 27,1895.

[nnen/Z072' ILO UNITED STATES PATENT EEICE.

JOHANN SCHWEITER, OF HORGEN, SWITZERLAND.

CLOTH-Russlue APPARATUS.

SPECIFICATION forming part of Letters Patent No. 545,252, dated August 27, 1895.

Application tiled September 21, 1894i Serial No. 523,744. (No model.)

To all whom it may concern.-

Be it known that l, JOHANN ScHwnIrnE, a citizen of the Republic of Switzerland, and a resident of Horgen, in Switzerland, have invented certain new and useful Cloth -Rubhing Apparatus, of which the following is a specification.

My invention relates to an apparatus for rubbing cloth, such as silk, whereby the same may be rubbed or scraped by means of scraperblades and the same cleaned by means of brushes. Heretofore in nearly all cloth-rub loing apparatus the scraper-blades were caused to make a reciprocating lateral motion, whereby the rubbing was accomplished on the forward stroke, but the same passed over the material on the backward stroke. The scraper-blade of my cloth-rubbing apparatus rotates continuously in one direction, such direction beingthe direction of the motion of the material which is being acted upon, whereby not only is the loss ot time incurred by the ineffectual backward stroke of the scraperblades prevented, but an equal and perfect manipulation ofthe whole breadth ot' the material insured.

My invention consists ot a trame in which is mounted a continuously-revolving drum, said drum being provided with blade-holders for holding the scraper-blades, which holders are in turn provided with Shanks that are guided within the drum, means for adjusting the po sition of the scraper-blades with respect to the .periphery of the drum, rollers for guiding the cloth through the machinel and against the scraper-blades at diametricaily-opposite points of the drum, a take-up roller for drawing the cloth through the machine and over said guide-rollers, means for intermittently operating the take-up roller, said take-up roller operating to draw the cloth through the machine during the interval which occurs between the non-activity of one series of scraperblades and that of the following series of scraper-blades, means for pressing the cloth with a greater or less degree of pressure against the scraper-blades, said pressure medium'being provided with an adjusting device whereby the pressure may be regulated; and my invention consists also ct the construction and combination of parts and details, to be fully described hereinafter, and then claimed.

In the accompanying drawings, Figure l is an end elevation of my improved cloth-rubbing apparatus. Fig. 2 is a broken longitudinal vertical section through the drum, the lower parts of the machine being in elevation and others broken away, while some of the Scrapers are removed. Fig. 3 is an end View of the drum which carries the knives, the lefthand portion of said drum being shown in' section while the right-hand portion is shown in elevation; and Fig. 4i is a detail enlarged view showing one of the blade-holders and its shank, and the scraper-blade carried by the holder, together with means for guiding the same in the drum, while Figs. 4a, e, and 4 are similar views showing three different arrangements or positions of the same parts.

Similar letters of reference indicate c0rre sponding parts.

The frame ofthe apparatus comprises end sections A A', which are connected together by suitable tie-rods, such as A2. The shaft a of the scraper-drum of the machine is journaled in boxes As A3, supported in the end sections A A of the same, said shaft a carrying at each end the heads a of the drum, which heads are shown in the shape of a wheel or spider-frame for the purpose of lightness. In the slots of the blade-holders Z1 areinserted the well-known steel rubbing-blades m, the same being retained therein by means otsetscrews m. These blade-holders are held in position in the drum by means of inwardlyextending Shanks c, which are attached to said holders and at their inner ends passed through openings in the laterally-movable guide-bars d, which in cross-section are U- shaped, While the holders themselves are retained in position at the periphery of the drum by means of cross-bars e that connect the heads a a of the drum, said bars c overlapping the laterally projecting heel portions b of the blade-holders h. A series of scraper-blades is, as clearly shown in Fig. 2, arranged longitudinally of the periphery of the drum and for each series there is an inner guide-bar d. As shown clearly in Figs. l and 3, several series of the scraper-blades are arranged, respectively, at equal distances apart around the periphery 0E the drum. Under the influence of the springs g and f the blade-holders h are pressed radially out- 'ward against the retaining-bars e, their heel IOO projections Z2 impinginguagainst the same. The springs f are flat springs attached to cross-bars f', arranged at equal distances apart upon the periphery of the drum and connecting the heads a a of thc same, and serve to maintain the relative position between the blade-holders and the cross-bars e, the drum being supposed to. rotate in the direction of the arrow, Figs. l and 3. The spi ral springs g are coiled around the shanks c of the blade-holders and press against the U- shaped guide-bars d, and also upon the rear portions of the blade-holders.

Mounted loosely upon the shaft a of the scraper-drum and arranged outside of the heads ct of the same are two disks t','respect ively, which for a portion of their peripheral length are each provided with cog-teeth i2, and also with a series of slots i', which eX- tend eccentrically with respect to the shaft and receive studs CZ', that project from the ends of guide-bars CZ, whereby when said disks are rotated upon the shaft the same are caused to act upon the studs d of the guide-bars and shift the bars laterally with respect to the periphery of the drum-that is to say, said guide-bars are caused to approach or recede from the shaft a', according to the direction of the rotation of the disks i-the guide-bars being further guided in their movements by means of the radial slots 7i, formed in the end portions ct of the drum, and through which slots 7i the bars extend. The cog-disks z' are rotated by means of pinions 7a 7c, respectively, which are mounted upon the ends of a shaft Z, having bearing in the heads ct d of the drum, said pinions engaging the toothed portion of the diskse'and turned by said shaft Zthrough the medium of a suitable hand-crank (not shown) having a socket, whereby it may be fitted onto the squared ends of the shaft, l. It will be understood that the guide-bars d are caused to recede from or approach the shaft a by reason of the eccentric arrangement of the slots il. By this means the springs g may be uniformly compressed or permitted to expand, so that. the position of the scraper-blades m .with respect to the periphery of the drum may be simultaneously regulated and the degree of pressure which they exert upon the cloth controlled.

The material n which is to be rubbed is led from a superposed table o on the fratne A A of the machine, around the guiderollersp p p2, respectively, to the take-up roller q in such being such as that the material is guided in the manner stated. At the diametrically-opposite points whereat the scraper-blades m are permitted to act the material is pressed against the scraper-blades by means of 'Ilexible pressure-aprons r fr, preferably made of leather, which are arranged above and below the drum, the respective ends of each being firmly fastened to the peripheries of tensionrollers r r', which are journaled in suitable bearings r4, fixed to the frame of the machine. To the spindles of the tension-rollers r r' are applied levers 1"?72, which are arranged in pairs, the members of each pair being connected by means of a tension-spring r3. One

'of the members r2 of each Jair of levers is provided with a hook x, over which takes a loop formed on one end of the spiral spring r3, while the other end of the spring is screwthreaded and passes through an opening` in the other member and receives a nut ne', whereby the members of the respective pairs of levers are caused to approach or recede from each other and the tension of the rollers r regulated. Both of the flexible aprons r are in the direct line of passage of the rnbbing-blades, and are consequently pressed outward by said blades in passing both. This has the effect of imparting to the cloth an elastic pressure, the degree of pressure being determined by the tension of the springs The shaft of the take-up roller Q is journaled in bearings q2, and is provided at one end with a ratchet-wheel q', the teeth of which are to be engaged by a suitable pawl, whereby the take-up roller is caused to rotate so as to wind up the material every time the blades are not acting on the same-that is to say, the take-up roller acts during the interval when one set of scraper-blades has j ust passed the material and another set is coming into action by reason of the rotation of the drum. This intermittent rotation of the take-up roller q is effected by means of a wheel t, which is mounted on one end of the shaft a of the drum and provided in its outer face with a sinuous cam-groove tx, into which projects an elongated pin t that is located at one end of a double-armed lever to, pivoted at T to the frame of the machine, while the other end of the double-armed lever to is pivotally connected by means of a link t2 with an operating-lever t3, which is mounted loosely on the shaft of the take-up roller, and which carries the actuating-patri t4 that engages the teeth of the ratchet-wheel q'. The operative portions of the sinuous cam-groove X lie, respectively, between and alternate with the different series of scraper-blades, so that the forward motion of the material is caused to take place at the moment that it is relieved from the action of the blades.

To the end of the shaft of the take-up roller q opposite that on which the ratchet- Wheel q is mounted is applied a cam-wheel fu, the groove ex of which is formed upon the periphery of the same and receives the free t i f I the same time it does not interfere with the rotation of the same. At each forward motion of the take-up roller q the lever t" is caused to swing slightly on its pivot fifi by reason ot' the action of the actuating camwheel fox, whereby the scraper-drum, together with all of the blades and parts carried thereby, are slightly displaced longitudinally. The purpose of imparting this slight axial motion to the scraper-drum is to cause the scraperblades to operate over a greater breadth of material and not onlyin a continuous straight line along the material. All part-s of the material are thus subjected to the rubbing operation and become homogeneous in. appearance and quality. Y

The groove vx of the cam-wheel yv is so disposed that the revolving drum makes one complete to-and-fro endwise motion with each rotation of the take-up roller. A weight w, arranged on the lower depending end of the link t2, acts to cause a steady act-ion of the parts influenced thereby and prevent rattling of said parts.

In addition to the rubbingknives,'brushes Il can be attached along the periphery of the drum, and are preferably arranged at regular intervals betweenthe scraper-blades fm. The blades and brushes may be so-arranged that they will not operate together upon the cloththat is to say, they may be adjusted.

so that either one or the other are caused to act at one time. For instance, when it is desired to operate with the brushes alone small wedges B may be placed between the crossbars c of the drum and the heels b ofthe knife-holder, as shown clearly in Fig. 4.

Slight changes in the details of the construction of my improved cloth-rubbing apparatus will readily suggest themselves to skilled mechanics, and I do not desire to limit myself to the exact construction shown. 'Having thus described my invention, I

claim as new, and desire to secure by Letters Patentl. In a cloth rubbing apparatus, the combination, with the frame, a drum provided with ashaft journaled in the frame, and scraper blades yieldiugly supported upon the periphery of the drum, of means for guiding and drawing the material through the machine, iiexible pressure aprons arranged upon tension rollers located at diametrically opposite points of the drum, and means for adjusting the tension of said rollers, substantially as set forth.

2. In a cloth rubbing apparatus, the combination, with the frame, a drum provided with a shaft journaled in the frame, and a series of scraper blades arranged upon the periphery of the drum, of means for guiding and drawing the material through the machine and around the drum, flexible pressure aprons arranged at diametrically opposite points of the drum, tension rollers to which the opposite ends of the aprons are attached, levers fixed to the rollers, and tension springs connecting each set of levers, substantially as set forth.

3. In a cloth rubbing apparatus, the combination, with the frame, and a drum mounted therein and provided on its periphery with a series of elastically mounted scraper blades, means for guiding the material around the drum, a take up roller around which the material is caused to be wound and means for imparting an intermittent rotary motion to the take-u p roller, the same comprising a cam wheel, arranged upon the shaft of the drum, a ratchet wheel fixed to the take-up roller, an actuating lever provided with a pawl adapted to engage the teeth of said ratchet wheel, and connections between said cam wheel and the actuating lever, substantially as set forth.

4. In a cloth rubbing apparatus, the combination with the frame, a drum provided with a shaft journaled in the frame, and a series of scraper blades arranged upon the periphery of the drum, and provided with Shanks, of disks mounted loosely on the shaft and provided with peripheral cogs, a second shaft journaled in the drum and provided with pinions adapted to engage said cog disks,

` whereby the disks may be rotated, said disks being provided with a series of eccentric slots, guide-bars extending through the head of the drum and into said eccentric slots, said guide-bars guiding the Shanks of the blades, springs arranged between the blades and guide-bars, and means for pressing the material against the knives, substantially as setforth.

5. In a cloth rubbing apparatus, the combination, with the frame, a drum provided with a longitudinally movable shaft mounted in the frame, and scraper blades arranged upon the periphery of the drum, of a take-up roller for drawing the material through the machine, means for guiding the material, a cam wheel on the shaft of the take-up roller, a lever pivoted to the .frame of the machine, said lever being connected with the shaft of the drum so that the same may rotate and yet be longitudinally shifted by the movement of the lever, and means for pressing the material against the knives, substantially as set forth.

In'testimony whereof I hereunto sign my name in the presence of two subscribing witnesses.

JOHANN SClllil-TEYFER.

Witnesses:

A. Nenn, H. Soirurrssnn,

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